Q. In a series resonant circuit Q is more than 10. Then the lower half power frequency ω₁, and resonant frequency ω₀ are related as

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Q. If R, L, C are in parallel, the currents through L and C are equal in magnitude at resonance.

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Q. In all pure metals, temperature coefficient of resistance is positive.

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Q. Bandwidth will be

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Q. In carbon resistor colour code, the fourth band indicates tolerance.

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Q. For any given two port network, any parameter set can be determined from measurements made at the two ports.

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Q. For 200V r.m.s. value triangular wave, the peak voltage will be

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Q. When a lead acid battery is fully charged the colours of its positive and negative plates are

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Q. Network transients are due to

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Q. Assertion (A): In an R-L circuit having low resistance, current lags the voltage by nearly 90°.

Reason (R): Power factor of a series RL circuit is R/Z.

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Q. Two coils are so wound that 60% of the flux of one links the other. The coefficient of coupling is

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Q. In a sine wave, maximum rate of change of voltage occurs at

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Q. Which of the following statements is incorrect?

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Q. A two port network is symmetrical if

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Q. In a varistor, as the voltage increases beyond a certain value, its resistance

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Q. Current through a charging capacitor exhibits

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Q. A battery charger can drive a current of 5A with 1Ω resistance connected at its output. If it can charge 2 V battery at 7 A rate, its Thevenin's equivalent circuit will be

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Q. A two terminal black box contains one of the elements R, L, C. The black box is connected to 220 V as supply. The current is I, when a capacitance of 0.1 F is connected in series between the source and box, the current is 2I. The elements is

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Q. For a voltage transfer function H(s), realizable by RLC network, the following statements are made

1. H(s) cannot have a pole at s = 0
2. H(s) cannot have a pole at s = ± j4
3. H(s) cannot have a pole at s = ∞
4. H(s) cannot have a pole at s = + 2

Of these statements

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Q. Nichrome is commonly used for

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